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압전 캔틸레버 구조와 차량하중 전달방법에 따른 도로용 에너지 하베스터의 설계 및 평가
김창일,김경범,정영훈,이영진,조정호,백종후,강인석,이무용,최범진,박신서,조영봉,남산,Kim, Chang-Il,Kim, Kyung-Bum,Jeong, Young-Hun,Lee, Young-Jin,Cho, Jeong-Ho,Paik, Jong-Hoo,Kang, In-Seok,Lee, Moo-Yong,Choi, Beom-Jin,Park, Shin-Seo,Cho, 한국전기전자재료학회 2012 전기전자재료학회논문지 Vol.25 No.10
A road energy harvester was designed and fabricated to convert mechanical energy from the vehicle load to electrical energy. The road energy harvester is composed of 16 piezoelectric cantilevers. We fabricated prototypes using a vehicle load transfer mechanism. Applying a vehicle load transfer mechanism rather than directly installing energy harvesters under roads decreases the area of road construction and allows more energy harvesters to be installed on the side of the road. The power generation amount with respect to the vehicular velocity change was assessed by installing the vehicle load transfer mechanism form and underground form. The energy harvester installed in the underground form generated power of 4.52 mJ at the vehicular velocity of 50 km/h. Also, power generation of the energy harvester installed in the vehicle load transfer mechanism form was 48.65 mJ at the vehicular velocity of 50 km/h.
김창일(Kim Chang-Il) 한국무속학회 2003 한국무속학 Vol.0 No.6
이 글은 이공본풀이계 서사체의 서사전개 양상과 공간 의미에 대해 살펴보았다. 우선 이공본풀이계 서사체는 3명의 주인공이 순차적으로 부각되면서 이야기를 형성하고 있음을 밝혔다. 사라도령이 천상의 부름을 받고 떠나는 제1노정기, 원강암이 장자로부터 고통받는 수난기, 할락궁이 아버지를 찾아 탈출하여 길을 떠나는 제2노정기 그리고 세 주인공이 함께 신으로 상승되는 좌정기로 나누었다. 다음으로 이공본풀이계 서사체의 공간 의미에 대해 세 가지로 나누어 살펴보았다. 첫째, 선ㆍ악의 공간인데 장자의 집은 악의 공간으로, 서천꽃밭은 선의 공간으로, 사라수대왕의 궁은 현실계의 가치중립적 공간으로 설정하였다. 둘째, 공간이동 경로에 따라 두 계열로 나누었는데 이를 통해 비현실계로서의 서천꽃밭은 신의 공간이면서 동시에 현실계의 인간이 도달할 수 있는 공간임을 알 수가 있었다. 셋째, 서천은 생명의 공간이기도 하다. 이렇게 꽃과 인간의 생명을 관련지어 생각한 것은 우리의 오랜 사유체계 속에 잠재되어 있었던 것으로 보았다. This study focuses on the spatial and narrative style of the Egongonpuri type. First of all the narrative consists of 3 main characters to make up the story. SaraDoryung receives his calling from heaven and starts the first journey period. WonKangAm during the ordeal period being persecuted by JangJa. HalRakGung who starts out to look for his father makes up the second journey period. And finally all three of the main characters make up the ascension into heaven period(to become a divine being). All of these sections are combined to make up the story. This is called linking through episodes. Not only do SarasuDaewang, WonangBuyin, AhnrakGuk divide the unfolding of the story, but also, depending on whom the focus is on, the theme of the story differs. Focusing on the life of SarasuDaewang, the theme becomes the previous life of Buddha. Focusing on WonangBuyin, the theme becomes the hardship and sacrifices of women. Focusing on AhnrakGuk the theme becomes the life of a hero. Next this study looks at the spatial meaning of the Egongonpuri narrative style by dividing it into three parts. The first of good versus evil, with the house of JangJa being the setting for evil, the Seocheon flower garden being the setting for good, and the SaraSuDaeWang( SaraSu the great king)s palace set as the neutral ground of the real world. The second division can be made by examining the spatial movement. Here the Seocheon flower garden becomes both the setting for divine beings while at the same time it becomes a setting where mortals also can arrive at. The third division can be made by thinking of Seocheon as the setting for Life. How the lives of humans are linked in the subconscious with flowers is shown here through many examples.
압전 캔틸레버 구조를 이용한 도로용 에너지 하베스터의 개발 및 평가
김창일,김경범,전종학,정영훈,조정호,백종후,강인석,이무용,최범진,조영봉,박신서,남산,이영진,Kim, Chang-Il,Kim, Kyung-Bum,Jeon, Jong-Hac,Jeong, Young-Hun,Cho, Jeong-Ho,Paik, Jong-Hoo,Kang, In-Seok,Lee, Moo-Yong,Choi, Beom-Jin,Cho, Young-Bong 한국전기전자재료학회 2012 전기전자재료학회논문지 Vol.25 No.7
A road energy harvester was designed and fabricated to convert mechanical energy from the vehicle load to electrical energy. The road energy harvester is composed of 24 piezoelectric cantilevers and a vehicle load transfer mechanism. Applying a vehicle load transfer mechanism rather than directly installing energy harvesters under roads decreases the area of road construction and allows more energy harvesters to be installed on the side of the road. The power generation amount with respect to the vehicular velocity change was assessed by installing the vehicle load transfer mechanism and the energy harvester in the form of speed bumps and underground. The energy harvester installed in a speed bump form generated power of 7.61 mW at the vehicular velocity of 20 km/h. Also, power generation of the energy harvester installed in the underground form was 63.9 mW at the vehicular velocity of 28 km/h. Although the number of piezoelectric cantilevers was reduced by 1/3 to 24 in comparison to the previous research results with 72 piezoelectric cantilevers, similar power generation characteristic value was obtained within the vehicular velocity of 20 km/h by altering the vehicle load transfer mechanism and cantilever vibration method.
BCl₃/Cl₂/Ar 플라즈마에서의 Na<SUB>0.5</SUB>K<SUB>0.5</SUB>NbO₃ 박막의 표면반응
김동표(Dong-Pyo Kim),엄두승(Doo-Seung Um),김관하(Gwan-Ha Kim),우종창(Jong-Chang Woo),김창일(Chang-Il Kim) 한국표면공학회 2008 한국표면공학회지 Vol.41 No.6
The etch of (Na0.5K0.5)NbO₃ (NKN) thin film was performed in BCl₃/Cl₂/Ar inductively coupled plasma. It was found that the 1sccm addition BCl3 (5%) into Cl2/Ar plasma caused a non-monotonic behavior of the NKN etch rate. The maximum etch rate of NKN was 95.3 ㎚/min at BCl₃ (1 sccm)/Cl₂ (16 sccm)/Ar (4 sccm), 800 W ICP power, 1 Pa pressure and 400 W bias power. The NKN etch rate shows a monotonic behavior a s the bias power increases. The analysis of the narrow scan spectra o f XPS for both a s-deposited and etched NKN films allowed one to assume ion assisted etch mechanism. The most probable reason for the maximum etch rate can be defined as a concurrence of chemical and physical etch pathways.
원저(原著) : 철결핍성 빈혈의 철요법에 따른 MCV 및 RDW에 대한 고찰
김창일 ( Chang Il Kim ),정미경 ( Mi Kyung Chung ),조창호 ( Chang Ho Cho ) 대한임상병리사협회 1996 임상혈액검사학회 발표자료집 Vol.3 No.1
1992년 1월부터 1994년 12월까지 약 36개월 동안 본원에서 골수검사를 실시하여 철결핍성 빈혈로 확진되어 철요법 중 6개월 이상 추적이 가능했던 33명(남 : 6, 여 : 27)과 정상 대조군으로는 1992년 8월부터 1994년 7월까지 약 24개월 동안 본원 혈액원의 헌혈자로 건강 판정을 받은 147명(남 : 101, 여 : 46)을 대상으로 하여 COBAS ARGOS 자동 혈구분석기를 사용하여 혈색소 및 각종 적혈구 지수를 측정하여 얻은 성적을 요약하면 다음과 같다. 1. 정상 건강인의 평균 적혈구용적은 89.1 ± 3.62(남 : 89.9 ± 3.33, 여 : 87.5 ± 3.71)/fl, 적혈구 분포폭은 13.4 ± 0.82(남 : 13.4 ± 0.80, 여 : 13.3 ± 0.86)였으며, 평균 적혈구용적은 남여 간의 유의한 차이를 보였으나(P<0.05), 적혈구 분포폭은 차이가 없었다. 연령별에서는 평균 적혈구용적 및 적혈구 분포폭 둘다 유의한 차이를 보였다(P<0.05). 2. 철결핍성 빈혈 환자군은 평균 혈색소 :7.4 土 3.05 gm/dl, 평균 적혈구용적 : 65.87 ± l1.28/fl, 평균 적혈구 혈색소량 : 19.8 ± 4.94/pg, 평균 적혈구 혈색소농도 : 29.9 ± 2.56 %, 적혈구 분포폭 : 22.4 ± 3.27로, 정상 건강인에 비해 혈색소, 적혈구용적, 평균 적혈구 혈색소량 및 평균 적혈구 혈색소농도는 유의하게 낮게(P<0.05), 그리고 적혈구 분포폭은 유의하게 높게 보여 주었다(P <0.05). 3. 철요법에 따른 적혈구 및 적혈구 지수의 변화를 보면 적혈구 분포폭은 진단시부터 증가된 상태에서 치료중 더욱 증가하였다가 서서히 감소하여서 약 6개월째부터 정상화되었으며, 혈색소, 평균 적혈구용적 및 평균 적혈구 혈색소량은 1주째부터 서서히 증가하기 시작하여 각각 3개월, 2개월 그리고 3개월째부터 정상화 되었다. 이상과 같은 결과로 철결핍성 빈혈을 진단하는데 있어서 적혈구의 형태학적 관찰과 적혈구 지수 및 적혈구 분포폭도 함께 측정하여 잘 활용한다면 진단 뿐만 아니라 치료의 효과 판정에도 임상적 의의가 클 것으로 사료된다. The red cell distribution width(RDW), which provides a quantitative measure of heterogeneity of red cells in peripheral blood, has been suggest as a good variable for diagnosis and evaluation of therapy of anemia, We measured the RBC indices(MCV, MCH, MCHC) and RDW, determined by the COBAS ARGOS, in 147(M : 101, F : 46) normal blood donors, in 33(M : 6, F : 7) subjects with iron deficiency anemia. Therefore this study was planned to evaluate the clinical significance of MCV and RDW during iron therapy in iron deficiency anemia. The results were summarizes as follows : 1. MCV and RDW in normal subjects were 89.1 ± 3.62/fl 13.4 ± 0.82, respectively. 2. MCV and RDW in IDA subjects were 65.9 ± 11.28/fl and 22.4 ± 3.27, respectively. (P<0.05 compared with healthy person). 3. The normalization for RDW, MCV and hemoglobin were 6 months, 2 months, and 3 months after iron therapy in IDA, respectively. RDW curve in IDA showed abrupt rising but slowly decreasing after the maximal response during iron therapy.